When I first started college, I remember finishing my first term and thinking "Okay, that's one down. Still got a long ways to go, but we're on the road. Just gotta keep on keeping on."
Then I woke up. It was a dream! I was actually only about a month in. What the hell, brain? What are you doing to me? That feeling of satisfaction, I hadn't earned it yet!
But the more I thought about it, the more I realized that the attitude I'd adopted in my dream was the correct one. Keep your eyes on the road and just keep going, doing the best you can. This is what you do right now. When you're done, you will do something else. That's how it works.